Lathe-frame



G. A. STEINLE, NLSMITH AND L. R. TAYLOR..

1 LATHE FRAME.

APPLICATIQN' 'man 1111315.19111.

I Patented M3129, 1920.

3 SHEETS-SHEET l.

ff N @111111, @im W .S '11u11 15111 i fiumi-4W" Humm .1

n .f 732/6722021; 6kg/mf A .S75/m. s

l G. A. STVEINLE, M. SMITH AND L. R. TAYLOR.

LATHE FRAME.

APPLICATIQN FILED Aua.15. 1913.

Patented Mar. 9,1920.

3 SHEETS-SHEET 2- G. A. STEINLE, M. SMITH AND L. R. TAYLOR. LA'IHEFRAME.

APPLICATION FILED AUG-15. |918.

Patented Mar. 9, 1920.

3 SHEETS-SHEET 3.

45 tion of one of the side bar supporting pedes- UNrTEn STATENT erntenfGEORGE A. sTEINLE, MARK SMITH, ANnLoiIIsn. TAYLOR,orivrAnrscr-r,wisconsin.`

LATHE-FRAME.

Speccaton of Letters Patent.

Application filed August 15,9 1918. Serial No. 250,027.

frames, and particularly toimprovements in the frames of long lathesadapted especially for boring and-turning the exterior-of naval and.army guns, although the advantages of the present invention maybeutilizedin the 'construction of smaller and shorter lathes.

The invention consists .generally in the constructions and combinationshereinafter described and particularly'pointed out in the claims. v Y

In the accompanying drawings, forming part ofthis specification, f f

Figure l is a plan view,'partly broken` away, showing the vmain featuresof a lathe having a frame constructed in `accordance with our invention.f

' Fig. 2 is a side elevation of the structure illustrated in Fig. l, Y f

Fig. 3 is an elevation of one of the end housings, v

Fig. 4 is qa similar view, partly vbroken away, of the rear headstockhousing,

Fig. 5 is an elevation Fig. Gisan elevation of one of the double mediateportions ofi'the ground shafts constituting the side members of theframe, the ways .uponQwhich the tool `carriage is reciprocated, and theboring bar guides fand the head stock housings are supported. f

Fig. 7 is a side elevationfof the frame corresponding to Fig.V 2, but ona larger scale with the operative parts of the latheomitted, Fig; 8 isan end elevationand partiall sectals showing kalso one lof the groundlshafts,

for lside bars, supported thereon 'and the means forsecu'ring said sidebars'in posi'- tion` w Fig. 9 is an enlarged detail of one ofthepedestals showing the means for securing the lower side bar in positionand the means for supporting the irack. Y .FiglOis adetail showingthemeans for adjustably,Y supportinggthe rear `boring bar of the frontheadv Y stock housing, Y ,35 Y g pedestals supporting and alining theinterguide fonthe upper cylindrical side members of the frame.

-In the vdrawings k2, 2, represent the end housings of the lathe. Thesehousings are preferably duplicate castings provided with perforatedoutwardly extending bottom -ilanges 3,k by whichthey may be bolted orotherwise secured to a suitable base. Each housing is also provided withan upper pairv of cylindrical bearing openings 4, 4, Fig. 3

and a corresponding lowerV pair of similar bearing openings 5, 5, Fig.3. Each `housing is also provided with yan upper cylindrical gpening 6forming a bearing for a boring While we have shown the end housings eachprovided-with a single pair of upper bearing openings 4, 4, and asinglepair of lower bearingopenings 5, 5, it will beunderstood that forlathes with wider frames Patented Mar. 9, 1920.

we may employ two pairs of upper bearing'l f openings, andtwo pairs oflowerbearing.

openings, orif greater rigidity isnecessary, o the upper and lowerbearing openings may arranged in groups of 3 instead of in pairs. This,however, will not alter the principle of thehereindescribed frameconstruction'.l We also prefer to provide the hous-y V ings with bearingopenings 4` and rfor the driving shafts of the boring and turningmechanism. l Y

g For supporting the head stock and rota,-` table chuck by which the gunor other article to be bored or turned is clamped and rotated, weprovide a pair of head stock housin vpreferably in the form illustratedin Fig. 4

of the drawings. These housings we design nate by the reference numerals7 and 7". They are provided with bearing'openings for thev cylindricalside barsor1nembers, l

and, as these bearing openings are similarto those in the end housingsand are corre- 'i spondingly located we have designated them v by thereference numerals 4 and 5, and have also 4designatedthe securingflanges or feetV at the bottom of the housings by the referrand 7 fareprovided with openings A8 to receive and support the rotatable "chuckv9'(see Figs. 1 and k2) kand the 'gearing` arranged I ence numeral 3.k Thehead stock housings 7 l thereon, and are also provided wlthvbearing nopeningsvlO that support a counter shaft 11. The head stock housings 7and 7 are, preferably,v for the purpose of securingA greaterrigidity,connected by a suitable arch-or castine 12.. (See lFigs-*L 2and 7i) f '5 in the head stock housings.

The side members oiC the iframe, both the upper' and lower members, arepreferably composed Voi' cylindrical bars or ground shafts designated inthe drawings by the reference numerals 13 and lll. The ends of the bars13 kare secured inthe bearing openings i in the end housings 2,'and saidbars extend through the corresponding lbearing openings et in the headstock housings 7 and" Tf. The lower 'baislare secured in the bearingopenings in the end housings 2and'V extend through the correspondingopenings The upper surfaces of the upper pair of bars 13 also torni waysupon which the tool carriage orcarriages are longitudinally re`-ciprocated, and upon whichthe rear boring bar suppoitl is longitudinallyadjustable.

It is, therefore necessary Vte provide a series oi intermediate supportsfor both the upper side bars 13 andthe lower side bars 14, and it isalsoiiecessaiy to have the upper portions of the bars leXposed for theirfull Y len th so that the tool carriages andthe ad# justable boring barsupport may inove'treely along' said ways, whiley being supportedthereby.

For this purpose we provide a series of i standards or pedestals 15 (seeFig. 6), each of which is provided with bearing openings `5corresponding to the like numbered open-- ings in the end housing 2 andthe head stock housings 7 and 7, and we provide the upper portion ofsaid pedestals with pairs ofA curved recesses au, the walls of' saidnrecesses being arcs. of .circles corresponding in vloca- Y tion andsize with corresponding arcs of the bearing openings el. inthe housings"7 and 7".

The `cylindrical bars are preferably securedV in the recesses a in thepedestals 1.5 by means of bolts 1G located in Countersunk openings 17 insaid bars, as shown iu detail g in FigQS of the drawings, and we preferto VVfill the said openings above the heads of the bolts withwoodenplugs 1S, which prevent dirt'or material from' accumulating insaid openings. Y i f Y l We prefer toconstructthese pedestals Vwith'complete circular openings, that is,V to say Vwith the metal extendingin a complete circle around 'each opening as indicated by thedotted'lines in ,'Fig. 8,- with a hole through the outer part thereofopposite i' 1 thehole that vis to receive the threaded end Vof the bolt,and after the side bars 13 arev placedV in position and are bolted tothepedestals, as illustratedlin Fig. .8, the outer 'portion of the metal,or the* part indicated i byfthe dotted' circle in Fig. 8,'is cut away soas to leave the upper and a part of the outer surface ofthe bar 13e-Xposed, as illustrated kfor example in'Fig. 10.

' The pedestals 15 are also preferably pro-V vided with flanges or feetby which theypmay be boltedV or secu-red to a suitable base and thetraine, we prefer to provide the rear head stock housing '7, eachof thepedestals 15 and the rear end housing 2 with a rectangular shoulder 22(see Figs. 5, 6, 9, and 10), upon which said rack may be supported asillustratedin detail in Fig. 9.

For the purpose of holding the boring bar guide, which is indicated inFig. 2 by the reference numeral '23,v in position on the upper side bars13, we prefer to provide. a block 2a which lits againstthe side. of, thebar 13 below the center thereof and is secured to the .outer portion ofsaid boring bar guide by means of suitable screws 25. This insuresretention 'of this guide in position `on the side bars 18 while it isbeing adjusted,longitudinally of the machine. Y Y.

Thelathe herein shown is designed to bore a cylinder, such as a cannon,from both ends.

It is, therefore, provided withY twoi boring bars marked 26 and 27.These bars are suit ably supported in line with each other andV areprovided with racks 28 and are arranged to loe-fed forward as theprogresses. Y ,f Y Y The present invention, however, is conboringYoperation fined to the construction of the lathe. traine and we do notconsider it necessary to describe in this application the means forsupporting or feeding thejboring bars or the means for rotating thechuck, the means `for reciprocating the tool carriage, orthe means foradjusting the boriiiggbar guide.v These' features, inV so faras they arenew with us, areV claimed in separate applications, Serial Nos. 250,028vand 250,029. filed ofi even date herewith. Y i Y 'i For the purpose ofcheapening.'thejcon- Vstruction we prefer to employ sideibars 13 madeVup of several 'sections arranged with iioV abutting ends as showni'nFigs. 1, 2 and 7, ,Y the Joint'at the abutting ends of thesectionsbeing indicated by the reference iuiineralO,V

and heldwe prefer touse pedestalsl at the 'i joints substantially`double the Width ofthe other pedestals as illustrated particularly in 1Y Fig. 7. This pedestal vis the saine as the other pedestals 15 exceptthat it hasV substantially double Width to forni a bea-ring for theabutting endsof sections of the bars 13.

` There numerous advantages resulting 'from this `framecenstruction'.fY'ilhecyli'ruilriL l2() To permit thesen'endsto beproperly alinedV bars.

'cal bars 1.3 and 14 are commercial articles l designated in the marketas ground shafts.

With a lathe of ordinary construction the ways of the lathe bed must beplaned. For

these large lathes only .big planers canbe employed and at the presenttime such planers are very difficult if not impossible to obtain. Withour construction `any number of sections may be employed to form theside This necessitates no change in the .construction except to requirethe use of a greater number ofsupporting pedestals.

As hereiiibefore stated instead of using a single pair of the upper-sidebars 13 and a single pair of the lower side bars 14, one bar of eachpair being located at one side of the center of the machine, we may usetwo pairs c able construct-ion for very large machines, iny which caseeach carriage will be supported upon two bars 13 both located on oneside of the machine.

A frame embodying this invention is very quickly constructed, and thelength of the frame may at any time be increased or decreased by addingor removing sections of side bars and their supporting pedestals.

Ve do not limit ourselves to the details of the construction as the samemay be varied in many particulars within the scope of the claims whichfollow. y Y

We claim as our invention:

1. A latheframe comprising end housings lic ving bearing openingstherein, cylindrical bars having their ends seated in said openings,pedestals supporting said bars intermediate to said housings and alathe-carriage mounted for longitudinal movement on said bars.

' 2. A lathe frame comprising end housings,

' movement onsaid members. v

. housings and each of said members compris-v ing a plurality of saidbars placed end to end, y

3. A lathe `frame comprising end housings, side members consisting ofupper and lower cylindrical bars seated at their ends 1n said wherebythe length of the lathe may be increased or decreased, pedestalssupporting said members and having lbearings for the abuttingendsthereof, and a lathe carriage mounted' for forward and backward movementonsaid members.

4.- A lathe frame comprising end housings, each having a pair of upperand a pairof lower bearing openings therein, cylindrical bars seated attheir ends in said openings and forming the upper and lower side members`of the lathe frame, pedestals lhaving lower openings lfor thelower-cylindrical bars and upper curved seats for the upper cylindricalbars, and a lathek carriage supported on said upper bars and movab-lelongitudinally ofthe lathe thereon.

5. A `lathe frame comprising end housings,

upper and lower side members mountedl therein, pedestals supporting saidside members intermediate to said housings, head stock housings havingopenings therein through which Vsaid upper and lower side membersextend, and an arched casting for said head stock housings.

G. A lathe frame comprising end housings, cylindrical bars mounted insaid end housings and forming the'upper and lower side members of thelathe frame, pedestals supporting said cylindrical lbars intermediaie tosaid end housings,some of said pedestals being wider than others forsupporting the abutting ends of the cylindrical bars forming said sidemembers, said bars being removable from said housings and pedestalswhereby the length of the lathe frame may be increased or decreased.

ings, cylindrical bars having their ends seated'in said housings, and`pedestals; supyportingsaid bars by engagement with the` under surfacesthereof leaving the upper Ysurfaces of said bars exposed.

' 8. A lathe frame comprising end housings, cylindrical bars havingtheir endsV c 7. A lathe frame comprising end housbars exposed4 toform'ways for supporting a Y p lathe carriage and permitting itslongitudinal movement on said bars.

9. -A lathe frame comprising end housings, cylindrical side bars seatedat their ends in said housings, yand pedestals arranged between saidendv housings and having curved seatsv for receiving and support- Vingsaid cylindrical bars and leaving their upper surfaces exposed, wherebya lathe'carriage supported on said bars is movable longitudinallythereon over said pedestals.

In witness whereof, we have hereunto set 'our hands this Srdday ofAugust 1918.

GEORGE A. s'rEiNLn MARK SMITH.

Louis n. TAYLOR.

Witnesses:

WM. R. BAGLEY, FRANK'D. REED.y

i'io

